Pulverizer.



PATENTED AUG. 14, 1906.

G. G. SGOULLAR & "Eh E. HILL. .PULVBRIZER.

APPLICATION FILED FEB. 11 1901.

3 SHEETS-SHEET 1.

No. 828,517. PATBNTED AUG. 14, 1906. I G. O. SGOULLAR & E. B. HILLPULVBRIZER. APPLIOATION FILED ms. 11. 1901.

a SHEETB-SHBET 2.

N0. 828,517. PATENTED AUG. 14, 1906. G. 0. SOOULLAR. & E. E. HILL.

PULV ERIZBR.

APPLIGATION FILED FEB. 11.1901.

3 SHEETS-SHEET 3.

STATES PATENT OF ICE.

CHARLES C. SGOULLAR AND EDWARD E. HILL, OF CHICAGO, ILLINOIS.

. PULVERIZE v Specification of Letters Patent. Application filedFebruary 11, 1901. Serial No. 46.900

Patented Aug; 14, 1906.

This invention relates to improvements'i'n a crushing or pulverizingmachine, and while it is more especially designed and intended to beused for reducing coal to fine or comminuted particles yet it isapplicable for and may be usedto comminute or grind to dust or flourores or other products; and it consists incertain peculiarities of theconstrucuse the same, we will now proceed to describe it, referrmg'tion, novel arrangement, and 0 eration of the various gifts thereof, aswil be hereinafter more lly set forth and specifically claimed.

The object of our invention is to rovide a pulverizer for reducing coalor ot' er products to a fine powder or dust which shall .be

simple construction, strong and durable, and efficient in operation.

In order to enable others skilled in the art to which our inventionpertains to make and to the accompanying drawings, in which-- Figure 1is a view, partly in elevation and partlyin section, of a pulverizerembodyin dicated by the arrows.

our invention. Fig. 2 is a central vertica sectional view, partly inelevation, taken on line 2 2 of Fig. 1 looking in the direction in- Fig.3 is a detached plan view of the platform and conveyer employed forcarrying the coal into and out of the rotatable cylinder-or drum. Fig. 4is a similar view of the sieve used for separatin the finer particlesfrom the-coarser ones an illustrating the mechanism for shaking thesame." Fig. 5 is a plan view of a portion of the supportin -fra me,showing some of the antifriction-ro lers on which the rotatable cylinderrests; and Figs. 6, 7, and 8 are crosssectional views of a portion ofthe main cylinder and the crushing-rollers, showing modificationsin themanner of mounting the latter.

Similar letters refer to like parts throughout the diflerent views ofthe drawings.

A represents themain or supporting frame, which may be made of anysuitable size, form, and material and" has vertically journaled thereonin suitable bearings a, a driving-shaft A, which is provided at itsupper end with a .series of antifriction-rollers cated near the ends ofthe cylinder or drum 1 pulley A, to which power may be applied foroperating the machine. J ournaled in suitable bearings.- a on the lowerortion or base of the main frame is an auxiliary shaft A on which ismounted a beveled gear a which meshes with a smaller and beveled gear awhich is mounted on the same shaft on which the beveled gear a ismounted and which gear meshes with a beveled gear 0, on the ower end ofthe driving-shaft. The lower portion of the main frame is rovided with awhich are lo B, which is provided at each of its ends withinwardlyextending annular flanges band referably has on its peri herynear each of Its ends a circumferentia rib or thickened portionb withwhich the rollers 12 impinge. As thecyli'nder B is not'journaled on ashaft, but rotates on the b (1 formed by the rollers b, it may benecessiy to provide means to prevent endwise movement of the cylinder,

'agid to accomplish this we'mayjprovide the lower portion of the mainframe with'a series of rollers b journaled in pairs, asshown in Fi 2 ofthe drawings, so as to impinge the si es of one of the ribs '1) ontheouter surface of the cylinder. Located on the periphery of the cylinderat about its middle is a circumferential rack B, which meshes with apinion b on the auxiliary shaft. Each end of the cylinder B is closed bymeans of 'a plateB which is fixed to themain frame and fits closelyagainst theends of the cylinder, yet in such a manner as to permit ofits rotation. On a shaft Bffjournaled' in suitable bearings, usuallyinthe'headlates B is a crushing roller or cylinder whic may be made in twosections B and B as shown in Fig. '2 of the drawings. This cylinder isof solid metal and is very heavy and'rests directly on the inner surfaceof the cylinder or drum, within which is also located so as'to contactwith-its inner surface an auxiliarycrushin roller or cylinder B, whichis made of solid metal and is journaled on arms or bars 12 extendingforwardly from the shaft B on which the larger crushing roller orcylinder is mounted. On one end of the. shaft B is mounted a gear I),which meshes with a gear I) on the shaft A and imparts rotary motion tothe main crushing cylmderorroller.

Passing through :the headlates B and suitably journaled in paralleismwith the shaft B and near the inner periphery of the drum or cylinderB is a shaft BY, on wh ich is' mounted within said cylinder acylindrical brush 1)", preferably composed of metallic bristles. Justabove this brush and extending from one head-plate B to the other is abar I), to which is secured a blade or scraper b the free edge of whichrests against the inner surface of the drum or cylinder and is for thepurpose of scraping ofi any of the pulverized material which mightadhere to the cylinder, as well as to form a guide for directing thecourse of the powder or pulverized material when thrown upwardly by therapid revolution of the aforesaid brush, which is driven by means of abelt I), passing over a pulle b on one end of the shaft B and over a puley B journaled on the main frame.

The head-plates B are provided in their upper portions with horizontalopenings 0 and below the same, but just above the crushing-rollers, withsimilar 0 enings c for the operation of the conveyer (E which comprisessprocket-chains c united together by means of slats 0 which chains passover suitable idlers c c c and driving sprocket-wheels c, which arejournaled on the main frame near the ends of the rotatable cylinder. In

the lower part of the openings c in the headplates is located a platformC, which extends outwardly some distance throu h one of said head-platesand is provided wit 'n the cylinder B with a diagonal slot c throughwhich the crushed product may ass when being carried on the platform C ymeans of the slats or scrapers c of the conveyer. The shaft 0 on whichthe sprocket-wheels c are mounted, is driven by means of a crossed belt'c, passing over a pulley c on said shaft and another ulley c on thedriving-shaft.

Thei lers c are journaled on suitable arms d, which are pivotallysecured at their u per ends to a support on the main frame an are drawnoutwardly. by means of a spring d,

' connected at one of its ends to said arms and at its other end to thesaid support, so as to keep the chains of the conveyer taut.

Located below the platform C and witliin the rotatable cylinder B is aseries of steampipes (1 which are arranged in rows inclined toward thebrush 1), as is clearly shown in Fig. 1 of the drawin s, and which maybe supplied with steam rom a suitable source. (Not shown.) Locatedbeneath these pipes and in an inclined position is a platform (i whichis secured at its upper end to a bar (1, extending from one head-plateto the other. Suspended by means of rods (i pivotally secured at theirupper ends to bars cl, extending from one head-plate to the other orotherwise suspended, is asieve D, which inclines from the brush 1), asis clearly shown in Fi 1 of the drawings. One side of the sieve D isprovided with a projection D, having a slot ,in which is located a crankd 'journaled on the main frame and driven by means of a sprocket-chaind, passing around a sprocketwheel d on the drivin -shaft and also arounda wheel d" on the cran -shaft, which arrangment will cause the aforesaidsieve to e shaken or agitated, so as to separate the finer particlesfrom the coarser and allowin the former to fall on a platform G which 1slocated beneath the sieve and extends out through one of the openings 0in one of the head-plates. The coarser particles retained by the sievewill be shaken therefrom in front of the crushing-roller B", so as to beagain operated on. Extending through one of the head-plates into thecylinder B is an exhaustpipe E, which is provided with a longitudinalslot 6 for the admission of the flying dust, which may be drawn out ofthe cylinder through the pipe E to any desired point by means of asuction or exhaust fan attached thereto. (Not shown.)

The u per portion of the main frame is furnishedwith a ho per E for thepurpose of receiving and cond ficting the coal or other product to apair of corrugated rollers E, which are journaled parallel with oneanother just below the hopper and are driven by means of a beveled geare on the main or driving shaft, which gear meshes with a beveled ear eon a shaft 6 which carries a ear e, w 'ch meshes with a gear 6 on the saft of one ofthe said rollers. Journaled parallel with one another onthe main frame below the corrugated rollers E are two smoothfacedrollers F, which receive the crushed product from the corrugated rollersthrough a chute F, located beneath the corrugated rollers. The "rollersF are driven by means of a beveled gear 9 on the driving-shaft, whichgear meshes with a beveled gear g on a shaft g, which carries a gear 9which meshes with a gear 9 on one of the shafts of said rollers. On theopposite end of the shaft on which the gear g is mounted is a pulley Bover which the belt I), which operates the brush, passes and which beltalso passes over idle pulleys f, journaled on the main frame at asuitable oint. Connected at its ends to the head-p ates B and locatedbetween the crushing-rollers B and B, so as to rest against the innersurface of the drum or cylinder B, is a scraper h, which is employed toremove or loosen any of the crushed material wh ich might-adhere to thesaid cylinder. Located beneath the rollers F in an inclined position isa chute G, which is used for conveying the material from said rollers,so as to deposit it on the platform 0, over which the conveyer travels.

It is apparent that the working gear fordriving the several parts-of themachine may be dif'ferentl arranged or constructed; but thehereinisclosed arrangement is a convenient one for operating the entiremachine from one driving-shaft; but we do not desire to be limited tothe specific form and arrangement of the gearing mechanism, as we maytimes locate another auxiliary crushing roller or cylinder to the rearof the larger one and. pivotally connect .it to the shaft B by means ofarms I) in a like manner as the roller or cylinder 13 is connected,which is clearly shown in Fig. 8 of the drawings. We have shown thelarge crushing roller or c linder as being made of two sections B andwhich may be done for the convenience of handling said roller whenplacing it in position; but it may be made of one piece or more, as isapparent. I

In order to attain the best results in pulverizing the coal or othermaterial, it should be as dry as possible when it reaches thepulverizing-cylinders within the drum or hollow cylinder, and forthis-reason the steam-pipes i I between which the product must'pass areof great importance. I

From the foregoing and by reference to the drawings it will be clearlyseen and readily understood that by lacing lum -coal, ore, or

caused to pass between the corrugated rollers E, which will crush it toa certain degree of fineness, from whence'it will pass through the chuteF between the rollers F, by means of which it will be further crushed orcomminuted, and from these rollers the product will pass down theinclined chute G to the platform 0, onwhioh it will be carried, by meansof a conveyer G, into the rotatable drum of hollow cylinder. As theslats c of the conveyer pass along the platform 0 it is a parent that hecrushed product will drop t ough the diagonal slot a so as to feed thematerial to the steam-pipes d and sieve D gradually. The steam-pipes (1being arranged in rows inclined toward the raised end of the sieve willhave a tendency to cause the product to move in said direction; but tocarry all of the product ,toward the higher end of the-sieve, so thatthe crushed material must pr as over its entire surface, we locate underthe steamipes in an inclined position the chute d in the agitation ofthe sieve, which is provided with very fine meshes, the finer particlesof coal or other material are sifted therethrough and will fall ontheplatform 0 from which it will be carried out through one of the openings0 in the head-plates to a suitable receptacle, into which it will bedeposited. The coarser par- .ticles will pass from the lower end of theit will be sieve infront of the auxiliary crushing-roller B when thesame is used and will be further pulverized by the action and weight ofsaid roller. As the drum B rotates, the material over which the'roller Bhas just assed will be loosened from the surface of t e drum or cylinderB by means of the scra er h, and the main crushing-roller B will furt ercrush and pulverize the material, after which it will be loosened fromthe surface of the drum by means of the scraper 6 and will be thrownupward and on the steamipes by means of the brush, as is shown by ottedlines in Fig 1 of the drawings,to again pass between said pipes and ontothe screen, when the abovedescribed operation will be re eated. As thescraper b is slightly curved 1n cross-section, it is apparent that thematerial thrown upwardly by the brush will be deflected thereby towardthe steam-pipes. The rollers B and B being of immense weight androtating on the inner surface of the drum will grind or pulverize thematerial to dust or powder, and as it is loosened from the surface ofthedrum by the scraper 6 and rapidly revolving brush it is apparent thatitwill be held the head-plates and so as to be rotated by suitablegearing, yet we may 1place said roller,

as well as others, in the ollow cylinder without journaling them (seeFig. 6) and allow them to be rotated by the revolution of the saidcylinder. We may also pivotally secure the arms I)? of the auxiliaryroller or rollers to the 'head plates, as is clearly shown in Fig. 7 ofthe drawings.

Having thus fully described our invention, what we claim as new, anddesire to secure by Letters Patent, is

1. In a ulverizer, the combination with a rotatable hollow cylinder, ofa fixed head at each of its ends having openings for the ad- 'missionand discharge of the material to be pulverized; a crushing-rollerlocated within the hollow cylinder, means'to rotate said cylinder androller, an endless conve er to convey the material into and out o thecylin-.

der,.said conveyer adapted to pass through the openings in the fixedheads, and means to operate the conveyer longitudinally of the.

cylinder whereby the finer particles of the material after being crushedmay be carried out and the coarser particles again subjected to thecrushing-roller, substantially as described.

2. In a ulverizer, the combination with a rotatable hollow cylinder, ofa fixed head at each of its ends having openings forv the admission anddischarge of the coal or other material, a main crushing-roller and anauxiliary crushing-roller bothlocated so as to contact with the innerperiphery of the cylinder, a scraper located within and against thesurface of the cylinder, means to rotatethe cylinder, an endlessconveyer adapted to pass each of its ends having openings'for theadmission and discharge of the coal or other material, a maincrushing-roller and an auxiliary crushin -rolle'r both located so ,as tocontact with the inner periphery of the cylinder, a brush located withinand against the inner surface of the cylinder, means to rotate thecylinder and brush, and a curved defleeting-plate located above saidbrush, substantially as described. I

' 4. In a pulverizer, the combination with a rotatable hollow cylinder,of a fixed head at each of its ends having 0 enings for the admissionand discharge o the coalor other material, a main crushing-roller and anauxiliary crushing-roller, both journaled so as to contact with theinner periphery of the cylinder, means to rotate the cylinder and anendless slatted conveyer to convey the material into and out of thecylinder, and means to operate the conveyer, a mechanism to separate thecoarser particles of the material from the finer and means to subjectthe coarser particles again to the crushing-rollers, substantially asdescribed.

5. In a pulverizer, the combination with a rotatable hollow cylinder,'ofa fixed headat each of its ends havingopenings for the ad-- mission anddischarge of the coal or other material, a conveyer passin through saidopenings, a platform under t e upper openings and a platform under thelower 0 enings, a main crushing-roller and an auxi iary crushing-roller,both journaled so as to con-.

tact with the inner periphery of the cylinder, and meansto rotate thecylinder and main crushing-roller, and to operate the conveyer t'oconveythe material into and out of the cylinder, substantially asdescribed.

6.- In a pulverizer, the combination with a rotatable hollow cylinder,of a fixcd'head at each of its ends having openings for the admissionand discharge of thecoal or other material ,a downwardly-inclined chutelocated below the inlet-openings, a main crushingroller journaled so asto contact with the inner eriphery of the cylinder, an auxiliary crusing-roller pivotally connected to the shaft of the main roller andjournaled so as to contact with the inner periphery of the cylinder, abrush located within and against the inner surface of the cylinder, andmeans to rotate the cylinder and brush whereby the material isprojected. back up to said chute, substantially as described.-

7 In a ulverizer, the combination with a rotatable ollow cylinder, of afixed head ateachof its ends having openings for the admission anddischar e of the coal or other material, a downwardly-inclined chutelocated below the inlet-openings, steam-' pipes located in rows abovesaid chute, a main crushing-roller journaled so as to contact with theinner periphery of the cylinder, an auxiliary crushing-roller pivotallyconnected to the shaft of the main roller and journaled so as to contactwith the inner periphery of the cylinder, a brush and scraper located.within and against the inner surface of the cylinder, and means torotate the cylinder, main crushing-roller and brush, whereby thematerial is projected back up to the said steampipes and chute,substantially as described.

I material, a main crushing-roller journaled so as to contact with theinner periphery of I the cylinder, an auxiliary crushing-rollerpivotally connected to the shaft of the main roller and ournaled so asto contact with the inner periphery of the cylinder, and means to rotatethe cylinder and main crushingroller and an endless conveyer to conveythe material into and out of the cylinder, substantially as described. I

9. In a pulverizer, the cornbinationwith a rotatable hollow cylinder, offixed heads at its ends each having an upper and lower opening, alatform located within the cylinder and be ow the upper openings andextending outside of one of the heads, a platform located within thecylinder, below the lower openings and extending outside of one of theheads, a conveyer traveling through said openings and on the uppersurface of said platforms, means within the cylinder to pulverize thecoal or other materiahthe steam-pipeslocated beneath the upper platformand within the cylinder, an inclined sieve located within the cylinderbelow the steam-pipes,

inclined position beneath the steamipes,

and means to rotate the cylinder and rush and to agitate the sieve andto convey the material into and out of the cylinder, substantially asdescribed.

ICC

11. In a pulverizer, the combination with a rotatable hollow cylinder,of a fixed head at each of its ends havingoipenings for the admissionand' discharge 0 material, a main crushing-roller journaled so as tocontact with the inner periphery of the cylinder, a rotatable brushjournaled so as to contact with the inner surface of the cylinder, aplatform located under each of the openings in the cylinder, a conveyertraveling through said openings and on the latforms, steam-pipes locatedwithin the ey der beneath the'uipper platform, and an inclined sievelocate steam-pipes, substantially as described.

12. In a pulverizer, the combination with a rotatable hollow cylinder,of a fixed head at each of its ends having 0 enings for the admissionand discharge 0 the coal or other material, a main crushing-roller andan auxil- .iary crushing-roller botlijournaled so as to contact with theinner periphery of the cylinder, a platformlocated beneath the upperopenings in the cylinder and having a d1ago-. nal slot, a platformlocated below the lower" openings in theicylinder, steam-pipes locatedwithin the cylinder beneath the upper platform, a sieve'suspended in aninclined position above the lowerplatform and beneath the steam-pipes, arotatable brush located within the cylinder and journaled so as tocontact with the inner periphery thereof, a scraper located near thebrush and against the surface of the cylinder, an exhaust-pipe the coalor other' within theciylinder beneath the opening into the cylinder, anda conveyer 5 traveling through said openings and over said platforms,substantially as described.

13. In a pulverizer, the combmation with a rotatable hollow cylinder, ofa fixed head at each of its endjs having openings for the ad- 0 missionand discharge of the material to be pulverized, a crushing-rollerlocated within the cylinder, a brush and scraper located within andagainst the inner surface of the cylinder, and means to rotate thecylinder 5 and brush, whereby the material is projected upwardly anddeflected by the scraper over the crushing-roller, substantially asdescribed. p 7

14. In a pulveriz'er, the combination with a 50 rotatable hollowcylinder, of a fixed. head at each of its ends having openings fortheadmission and discharge of thematerial to be pulverized, acrushing-roller located within the hollow cylinder, a brush locatedwithin 5

